Nonequilibrium Magnetization Dynamics of Gadolinium Studied by Magnetic Linear Dichroismin Time-Resolved 4f Core-Level Photoemission
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Nonequilibrium Magnetization Dynamics of Gadolinium Studied by Magnetic Linear Dichroismin Time-Resolved 4f Core-Level Photoemission

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Nonequilibrium Magnetization Dynamics of Gadolinium Studied by Magnetic Linear Dichroismin Time-Resolved 4f Core-Level Photoemission

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Melnikov, A.; Prima García, Helena; Lisowski, M.; Gießel, T.; Weber, R.; Schmidt, R.; Gahl, C.; Bulgakova, N.M.; Bovensiepen, U.; Weinelt, M.
This document is a artículoDate2008

Este documento está disponible también en : http://hdl.handle.net/10550/49864
The magnetic linear dichroism of the gadolinium 4f core level is studied in a time-resolved photoemission experiment employing laser pump- and synchrotron-radiation probe pulses. Upon optical excitation of the 5d6s valence electrons with femtosecond laser pulses, the magnetic order in the 4f spin system is reduced. Remarkably, the linear dichroism remains at 80% of the equilibrium contrast while the lattice temperature reaches the Curie temperature due to electron-phonon scattering. Contrasting itinerant ferromagnets, this shows that equilibration between the lattice and spin subsystems takes in Gd about 80 ps and is established in parallel with heat diffusion.

    Melnikov, A.; Prima García, Helena; Lisowski, M.; Gießel, T.; Weber, R.; Schmidt, R.; Gahl, C.; Bulgakova, N.M.; Bovensiepen, U.; Weinelt, M. (2008) Nonequilibrium Magnetization Dynamics of Gadolinium Studied by Magnetic Linear Dichroismin Time-Resolved 4f Core-Level Photoemission Physical Review Letters 100 10 107202-1 107202-4
http://dx.doi.org/10.1103/PhysRevLett.100.107202
distribuido bajo licencia Creative Commons de Reconocimiento-NoComercial 3.0 No adaptada

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